This paper introduces a newty designed underwater weak strengthening ship which is able to realize multifunctions such as plastic drainage plate inserting,geotechnical fabrics laying,underwater positioning and computer monitoring and recording etc.
The application of Side-Scan Sonar in submarine survey and the dynamic positioning principle of working with refitted fishing-boats are introduced in this paper.
In order to find the lifting & installing technology for semi-circular structures adaptable to the poor construction condition and high installation intensity of this project,this paper summarizes common marine lifting and installing technology for large & heavy members and puts forward a new marine installation technology using crane barges according to the structural characteristics of semi-circular structures and working conditions of this project,which has obtained many achievements of innovation in lifting point design,sling design,water filling for settling and marine positioning technologies.